#define _CRT_SECURE_NO_WARNINGS 1
#include<stdio.h>
#include<math.h>
int main()
{
    int m = 0;
    scanf("%d", &m);
    int n = pow(m, 2) - m + 1;
    for (int i = 1;i < m;i++)
    {
        printf("%d+", n);
        n += 2;
    }
    printf("%d", n);
    return 0;
}